I'm getting the following error - Uncaught ReferenceError: Tracker is not defined
I am running meteor under windows(meteor version 0.8.3).
The code is in my templates js file.
Tracker.autorun(function (c) {
if (MovieTrailers.find().fetch().length == 0)
return;
c.stop();
PlayCurrentTrailer();
});
So far I have tried :
meteor add deps
But that didn't work.
Is tracker available under 0.8.3? or am I missing a package?
tracker is the new name of deps, so replace the occurrence of tracker in your code with deps and you're good to go.
Try to avoid running older versions of Meteor to develop new code, can't you run a VM or use an online service like Nitrous.io for development purpose, as deploying a Meteor app to production in a Windows environment for the moment is not going to happen anytime soon ?
Related
After upgrading to Meteor 1.0.3.1 I now get this error
ReferenceError: moment is not defined
I can see here that it upgraded the momentjs to a newer version
momentjs:moment added, version 2.8.4
mrt:moment removed from your project
tsega:bootstrap3-datetimepicker upgraded from 3.1.3_1 to 3.1.3_3
Here is the code from the first place that I get that error
var today = new moment().format('MM/DD/YYYY');
Seems like it should still work. I tried to reinstall it and now the app is crashing.
Has anybody else had this issue?
I think the moment package on Atmosphere is actually up to 2.9.0. Try either running a meteor update, or manually remove the moment package (meteor remove momentjs:moment) and re-adding it.
Also, you shouldn't need to use new moment(), just moment(), like this:
var today = moment().format('MM/DD/YYYY');
So I've done the todo and leaderboard tutorials and now am excited to begin routing - seems like iron router is the way to go so I install it to my project using
mrt add iron-router
Seems to install ok so I start meteor and navigate to localhost:3000 and my console lights up with:
Uncaught TypeError: undefined is not a function
helpers.js:141 Uncaught TypeError: Cannot read property 'prototype' of undefined
router.js:61 Uncaught TypeError: undefined is not a function
global-imports.js?784bc180a149e4c10dff977a7f114df67d9952c6:3 Uncaught TypeError: Cannot read property 'RouteController' of undefined
template.tutorialexample.js?e119ff8df948cfe8167f49eb28794995a594841c:2 Uncaught ReferenceError: Template is not defined
tutorialexample.js?a4ef596255404350be2cc45303caea02f934cd17:1 Uncaught ReferenceError: Meteor is not defined
Mind you this is a default app, haven't touched a thing.
So if someone could point me in the right direction that would be great. I did read somewhere that I should be using 0.8.2 version of iron router - and I then did change my smart.json file to contain:
{
"packages": {
"iron-router": "0.8.2"
}
}
and then did meteor update etc but still no luck. So any help anyone could provide would be great.
Meteor has changed quite a bit & the instructions/tutorial you've been following is a bit dated.
Previously mrt was part of the meteorite packaging system, from Meteor 0.9.0 it has been integrated directly into meteor.
So now you do:
meteor add iron:router
To add it to your project. Once you start your app up it should present a basic template on how to use it.
I have trouble setting up a simple iron:router example: (docs, sample app)
meteor create testapp
cd testapp
home.html:
<template name="Home">
<h1>Welcome</h1>
home
</template>
router.js:
Router.route('/', function () {
this.render('Home'); // Also tried 'home'
});
Starting the server:
meteor
Then I get (client side):
Exception from Tracker recompute function: Error: Couldn't find a template named "/" or "". Are you sure you defined it?
at null._render (http://localhost:3000/packages/iron_dynamic-template.js?32038885cb1dad7957291ffebfffcb7f8cd57d20:239:17)
at doRender (http://localhost:3000/packages/blaze.js?88aac5d3c26b7576ac55bb3afc5324f465757709:1853:25)
...
What am I doing wrong ?
Note: I get the exact same error if I clone the example application (basic.html and basic.js).
meteor list
autopublish 1.0.1 Publish the entire database to all clients
insecure 1.0.1 Allow all database writes by default
iron:router 0.9.4 Routing specifically designed for Meteor
meteor-platform 1.1.2 Include a standard set of Meteor packages in your app
Also:
meteor --version
Meteor 0.9.4 <- Why all standard packages and meteor platform are > 1.0 and this is 0.9.4 ?
Currently, there are two versions of iron:router.
iron:router#0.9.4 is the one added by default when you type meteor add iron:router, this version is the latest in the "legacy" branch of iron:router that came up more than one year ago, it's the one that everyone is probably still using, although they should definitely update to...
iron:router#1.0.0-preX with X = 4 as of 20/10/2014, which is a complete rewrite of the package intended to be backward compatible, but introducing a new, nicer and polished API. This version will likely be set as default when meteor hits 1.0.0 later this year. The problem is that github page of iron:router shows this particular branch (1.0.0-pre4) along with examples that people believe are usable with 0.9.4.
This means that you are most likely using the wrong version of iron router, remove it with meteor remove iron:router and meteor add iron:router#1.0.0-pre4 instead.
Recommended reading to learn about the latest iron:router syntax :
http://eventedmind.github.io/iron-router/
Sometimes the guide is not completely up-to-date with the pre-release version, if you want to keep up with the latest stuff take a look at github issues.
I am experimenting with Meteor and iron:router. I git cloned the examples from https://github.com/EventedMind/iron-router.git. I then cd-ed into samples/basic, and ran meteor update and meteor. My meteor version is 0.9.3.1
When I navigated to the website an error is displayed in console and the page is empty. The error is as below:
Exception from Tracker recompute function: Error: Couldn't find a template named "/" or "". Are you sure you defined it?
at null._render (http://localhost:3000/packages/iron_dynamic-template.js?32038885cb1dad7957291ffebfffcb7f8cd57d20:239:17)
at doRender (http://localhost:3000/packages/blaze.js?7b7ff7ee2ccdccd85a1ad0d8dc9d96193e29e8b0:1853:25)
at http://localhost:3000/packages/blaze.js?7b7ff7ee2ccdccd85a1ad0d8dc9d96193e29e8b0:1795:16
at Object.Blaze._withCurrentView (http://localhost:3000/packages/blaze.js?7b7ff7ee2ccdccd85a1ad0d8dc9d96193e29e8b0:2029:12)
at viewAutorun (http://localhost:3000/packages/blaze.js?7b7ff7ee2ccdccd85a1ad0d8dc9d96193e29e8b0:1794:18)
at Tracker.Computation._compute (http://localhost:3000/packages/tracker.js?192a05cc46b867dadbe8bf90dd961f6f8fd1574f:288:36)
at new Tracker.Computation (http://localhost:3000/packages/tracker.js?192a05cc46b867dadbe8bf90dd961f6f8fd1574f:206:10)
at Object.Tracker.autorun (http://localhost:3000/packages/tracker.js?192a05cc46b867dadbe8bf90dd961f6f8fd1574f:476:11)
at Blaze.View.autorun (http://localhost:3000/packages/blaze.js?7b7ff7ee2ccdccd85a1ad0d8dc9d96193e29e8b0:1793:19)
at http://localhost:3000/packages/blaze.js?7b7ff7ee2ccdccd85a1ad0d8dc9d96193e29e8b0:1847:10 debug.js:41
Can someone kindly advise what I am doing incorrectly?
Thanks in advance.
The reason you have this issue is there is a discrepancy between the iron-router#1.0.0-pre-x (like a Beta for 1.0) and the currently in use 0.9.x version of iron router.
The old notation for defining a route for http://localhost:3000/route, for the template route would be as follows:
Router.route("route", { path : '/' });
However in the new version, which is currently on github on devel (which I presume the examples are based on is as follows):
Router.route("/", function() {
this.render("route");
});
The problem is using the notation on the bottom would lead to the error Couldn't find a template named "/" since the first param of the Route.route is now a path instead of a template.
The way to fix this is to either use the pre-release version of iron router (the version string can be found in the package.js file on github):
meteor remove iron:router
meteor add iron:router#1.0.0-pre3
Or to use the old notation by looking at an example bundled with a release on github instead of the devel branch like this one: https://github.com/EventedMind/iron-router/tree/v0.9.2-rc0
Can anyone tell me why the code below throws the following error? :
Error: A method named '/players/insert' is already defined
I'm new to Meteor and coffeescript so I may be overlooking something simple.
Here's my port of the leaderboard example to coffeescript:
###
Set up a collection to contain player information. On the server,
it is backed by a MongoDB collection named "players."
###
Players = new Meteor.Collection("players")
if Meteor.is_client
Template.leaderboard.players = ->
Players.find({}, {sort: {score: -1, name: 1}})
Template.leaderboard.selected_name = ->
player = Players.findOne(Session.get "selected_player")
player and player.name
Template.player.selected = -> if Session.equals("selected_player", this._id) then "selected" else ''
Template.leaderboard.events = {
'click input.inc': ->
Players.update(Session.get("selected_player"), {$inc: {score: 5}})
}
Template.player.events = {
'click': ->
Session.set("selected_player", this._id)
}
# On server startup, create some players if the database is empty.
if Meteor.is_server
Meteor.startup ->
if Players.find().count() is 0
names = [
"Ada Lovelace"
"Grace Hopper"
"Marie Curie"
"Carl Friedrich Gauss"
"Nikola Tesla"
"Claude Shannon"
]
Players.insert({name: name, score: Math.floor(Math.random()*10)*5}) for name in names
The full stack trace is as follows:
[[[[[ ~/dev/meteor/leaderboard ]]]]]
Running on: http://localhost:3000/
node.js:201
throw e; // process.nextTick error, or 'error' event on first tick
^
Error: A method named '/players/insert' is already defined
at app/packages/livedata/livedata_server.js:744:15
at Function.<anonymous> (app/packages/underscore/underscore.js:84:24)
at [object Object].methods (app/packages/livedata/livedata_server.js:742:7)
at new <anonymous> (app/packages/mongo-livedata/collection.js:111:13)
at app/leaderboard.js:4:11
at /Users/alex/dev/meteor/leaderboard/.meteor/local/build/server/server.js:109:21
at Array.forEach (native)
at Function.<anonymous> (/Users/alex/dev/meteor/leaderboard/.meteor/local/build/server/underscore.js:76:11)
at /Users/alex/dev/meteor/leaderboard/.meteor/local/build/server/server.js:95:7
Exited with code: 1
I'm running Meteor version 0.4.0 (8f4045c1b9)
Thanks in advance for assistance!
You would also get this error, regardless of using coffeescript or plain javascript, if you duplicated your files. For example, copying your sources files to a subdirectory named Backup would produce this error, because Meteor merges files from subdirectories.
This appears to be a configuration issue with coffeelint (installed globally with npm).
I originally installed coffeelint to check that my coffeescript code was correct and had no errors.
I installed coffeelint as per the instructions with:
sudo npm install -g coffeelint
coffeelint worked fine when run stand-alone against .coffee files.
However, when running any Meteor project with coffeescript package added I got the above error.
On a whim, I thought the error might be due to conflict with my exisiting node install.
I decided to uninstall coffeelint first with:
sudo npm uninstall -g coffeelint
and then deleted the previously meteor-generated leaderboard.js file.
After re-starting meteor the coffeescript example above worked as expected without errors.
try moving (ie copying and deleting the original )
Players = new Meteor.Collection("players")
one time below if Meteor.is_client
and another time below if Meteor.is_server
I don't know exactly why, as I'm new to Meteor too, but that worked for me, I assume that the server side needs it's own reference,as well as the client,
although declaring outside the scope should do the same (maybe a bug, remember they're still at 0.5.0 preview , which makes me think you might wanna upgrade and try some new smart packages that are with the new version, it looks like you're using 0.4), but when the files in my server wouldn't recognize anything I defined the root directory of meteor (which pushes these files to both client and server), I defined the server's own reference, and I got the same error, and until I moved the 'public' declaration of the reference to give the server and the client each their own copy, nothing worked.
Hopefully that helps...